Jürgen Dethloff

1924–2002

An early smart-card patent

Jürgen Dethloff worked in Hamburg.

With Helmut Gröttrup he filed a patent for a card with a chip.

The smart-card idea was also worked on in France.

Places: Hamburg

What they made

A chip card. Helmut Gröttrup shared the patent. The idea was also worked on in France.